Streetwise

Momentum Plays Will Rise Again

Stocks like Netflix and Chipotle took it on the chin last week, but they could be flying high again soon.

Baseball's long slog of a season has just begun, and the experts, at least, predict that this year's top teams will look a lot like last year's. The Boston Red Sox, the Detroit Tigers, and the Los Angeles Dodgers -- perennial contenders, all -- are among the most popular picks to win the World Series in 2014.

The stock market, too, favors the winners. You wouldn't know it from last week's action, which saw dramatic declines in highfliers such as Netflix (ticker: NFLX) and Chipotle Mexican Grill (CMG), but academic...